Finding the Fourth Proportional to 22,449.28, 30,982.72 and 13,018.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,449.28 : 30,982.72 = 13,018.24 : x
2. Step 2: Convert to fraction form
   22,449.28/30,982.72 = 13,018.24/x
3. Step 3: Cross multiply
   22,449.28x = 30,982.72 × 13,018.24
4. Step 4: Simplify right side
   22,449.28x = 403,340,484.81
5. Step 5: Solve for x
   x = 403,340,484.81/22,449.28
6. Step 6: Final answer
   x = 17,966.74